An information processing apparatus and transportation path opening/closing mechanism for removing a paper jam with ease even when the paper jam occurs where a data reader is disposed to the transportation path. A first scanner for imaging one side of a first or second transported medium is disposed to the outside guide wall side of the transportation path. A first pressure mechanism for pressing the first or second transported medium to the scanning surface of the first scanner is located opposite the first scanner on the inside guide wall side of the transportation path. A second scanner for imaging the other side of the first or second transported medium is located on the inside guide wall side of the transportation path. A second pressure mechanism for pressing the first or second transported medium to the second scanner is located opposite the second scanner on the outside guide wall side of the transportation path. The first scanner and second pressure mechanism are incorporated within an opening/closing wall section of the transportation path opening/closing mechanism that opens and closes by pivoting on a pivot joint. A mechanism for reducing or removing the holding force of the transportation rollers when the opening/closing wall opens is disposed for the transportation roller pairs located near this opening/closing wall.
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